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Make root vars more stable

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This commit is contained in:
Michael Goulet
2025-06-05 17:02:49 +00:00
parent c360e219f5
commit e1567dff24
3 changed files with 6 additions and 17 deletions
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3
compiler/rustc_infer/src/infer/type_variable.rs
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@@ -238,6 +238,9 @@ impl<'tcx> ut::UnifyKey for TyVidEqKey<'tcx> {
fn tag() -> &'static str {
"TyVidEqKey"
}
fn order_roots(a: Self, _: &Self::Value, b: Self, _: &Self::Value) -> Option<(Self, Self)> {
if a.vid.as_u32() < b.vid.as_u32() { Some((a, b)) } else { Some((b, a)) }
}
}
impl<'tcx> ut::UnifyValue for TypeVariableValue<'tcx> {

3
compiler/rustc_infer/src/infer/unify_key.rs
View File

@@ -137,6 +137,9 @@ impl<'tcx> UnifyKey for ConstVidKey<'tcx> {
fn tag() -> &'static str {
"ConstVidKey"
}
fn order_roots(a: Self, _: &Self::Value, b: Self, _: &Self::Value) -> Option<(Self, Self)> {
if a.vid.as_u32() < b.vid.as_u32() { Some((a, b)) } else { Some((b, a)) }
}
}
impl<'tcx> UnifyValue for ConstVariableValue<'tcx> {